Heater.



N0 670,066. Patented Mar. 19, l90l. D. E. SMOAK.

HEATER.

(Application filed. Oct. 18, 1900.) I (No Model.)

" nrnnr FFEQE.

DANIEL E. SMOAK, OF \VILKESBORO, NORTH CAROLINA.

HEATER.

SPECIFICATION forming part of Letters Patent N 0. 670,066, dated March19, 1901.

Application filed October 18, 1900. serial No. 33,501. (No mod l.)

To rtZZ whom it may concern;

Be it known thatl, DANIELE. SMOAK, aciti- Zen of the United States,residing at VVilkesboro, in the county of Wilkes and State of NorthCarolina, have invented a new and useful Heater, of which the followingis a specification.

This invention relates to heaters in general, and more particularly tofireplace-heaters, and it has specific reference to grates for burningdifferent fuels, the object of the invention being to provide aconstruction wherein a portion of the heat from the fire upon the gratemaybe utilized in heating water, forheating, cooking, or any otherpurpose, or for generating steam to be used as a motive agent or for anyother use.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in both views, Figurel is a perspective view showing one form of the invention specificallyadapted for use when burning wood as fuel. Fig. 2 is a front elevationof an em bodiment of the invention designed for burning coal, coke, andsuch small fuels.

Referring now to the drawings, and more particularly to Fig. 1 thereof,the grate in this form of the invention comprises a number of sectionsconnected to form a continuous passage, the tubular portions includingthe supporting-legs, the grate-bars, the fire-dogs, and the back, sothat a circulation of water may be established and maintained throughoutthe heater to secure the most efficient results, as will be understood.The heater is supported upon a frame including spaced pipes 5 and 6,disposed parallel and at the ends of the grate, below the grate-bars,and attached to the forward end of the pipe 5 is an upright section 7,having integral elbows 8 and 9, the elbow 8 directly receiving the pipe5, while the elbow 9 at the upper end of the uprightis turned laterallyat right angles and has a pipe-section 10 engaged therewith andextending transversely of the heater. To the end of the pipe 10 isconnected the elbow 11 at the upper end of a second upright pipe-section12, similar to the section 7, the elbow 13 at the lower end thereof,however, extending forwardly instead of rearwardly for engagement by afeed-pipe 14, through the medium of which water is supplied to thesystem of pipes forming the heater. Con nectcd with the rear ends of thepipes 5 and 6 are the elbows 15 and 16 at the lower ends ofuiprightpipes 17 and 18, said pipes having other elbows 19 and 20 at.- theirupper ends, which are directed toward each other and with which areengaged the ends of a pipe 21, the pipes 10 and 21 being adapted todirectly support the grate-bars of the heater. At the forward end of thepipe 6 isa removable elbow 22, it being understood that the elbows ofthe uprights above referred to are formed integral with their respectiveuprights, and with the elbow 22 is engaged an upright pipe or verticalpipe 23, which is continued above the pipe 10 and in close relationthereto on its front side, and with the upper end of this vertical pipeis engaged a return connection 24. \Vith the return 24 is also engaged apipe having an upturned forward end 25, with which connection of thereturn is directly made, and including also a rearwardlyextendingportion 26, which lies upon the pipes 10 and 21 and forms a grate-bar,the rear end of this pipe being bent upwardly at 27 and then forwardlyat an obtuse angle at 28, the several elements of this pipe lying in asingle vertical plane. A second pipe 29, of the same shape, is disposedat the opposite end of the heater, the horizontal section 30 thereofforming a grate-bar, While its portions 31 and extend upwardly andforwardly over the portion 30. The upwardlybent front end 33 of the pipeis engaged with a return connection 34, with which is also connected avertical pipe-section 35, at the lower end of which is an elbow 36,having an outlet-pipe 37 connected therewith, the elbow 36 beingintegral with the pipe 35. The upturned ends 25 and 33, together withthe returns connected therewith, form fire-dogs for the heater. Disposedupon the pipe 10 are a number of return connections 40, with the legs ofeach of which are connected pipe-sections 41, forming grate-bars andhaving e1- bows 42 at their rear ends, and with these elbows 42 areengaged vertical pipe-sections 43, which, in connection with theportions 31 and 27, form a water-back for the heater. With the upperends of the sections 43 are connected elbows 44, with which in turn areconnected nipples 45, having unions 46 for connection with other nipples47. The nipples 47 and the portions 28 and 32 are connected in series byreturns 89. With this construction the water enters through theinlet-pipe 14 and passes first across beneath the gratebars at the frontends, then downwardly and rearwardly, and then upwardly and acrossbeneath the rear ends of the gratebars, after which it passes downwardlyand forwardly and then upwardly through a firedog and to the firstgrate-bar. The water then passes rearwardly through a grate-bar and thenupwardly and then forwardly through the back of the heater and thenreturns downwardly and comes forwardly through the next grate-bar. Thiscirculation is continued through the several grate-bars and finallypasses through the second firedog and out at the outlet-pipe, it beingunderstood that theintermediate grate-bars are formed by the portions41. Thus the temperature of the Water is gradually raised and is finallydischarged at a high temperature or in the form of steam, depending, ofcourse, upon the condition and size of the fire.

In Fig. 2 there is shown a similar structure, the ends of the pipes 41,however, at the front of the grate being bent upwardly to form a frontfor the grate, so that coal and other finely-divided fuel may be used.It has been found that with this construction there is an eificientcirculation, while the water may be raised to a high temperature with anextremely small quantity of fuel, so that the structure is well adaptedfor heating, cooking, or any other purpose for which hot water or steamis used.

In practice modifications of the specific constructions shown may bemade, such as forming the back and overhanging portions of a casting,and any suitable materials and proportions may be used for the variousparts without departing from the spirit of the invention.

It will be understood that in the place of using jointed pipes to formthe elbows and turns continuous lengths of pipes may be employed and maybe bent into the proper shapes or that portions may be cast integral toinclude straightlengths, elbows, and turns;

also, that in the place of the unions 46 and their connected nipplessingle nipples with right and left threads may be employed forengagement with correspondingly-threaded elbows and turns.

What is claimed is- 1. A device of the class described comprisinggrate-bars, fire-dogs and supports for the grate-bars consisting ofspaced pipes having depending legs, said bars, pipes and legs beingconnected in series to form a continuous water-passage.

2. A device of the class described comprising grate-bars, an overhangingback and supports for the bars, consisting of spaced pipes havingdepending legs, said bars, pipes and legs being connected in series toform a wator-passage.

3. A device of the class described comprising grate-bars, a back andsupports for the bars formed of spaced pipes having depending legs, saidbars, pipes and legs being connected in series to form a water-passage.

4. A device of the class described comprising grate-bars, fire-dogs, aback, spaced transverse supports on which the bars are sustained, andlegs for the supports formed of pipes connected in series to form awater-passage.

5. A device of the class described comprising a series of parallel pipeshaving their forward ends bent upwardly and connected in series andhaving their rear ends bent upwardly and connected in series alternatingwith the connections of the front ends, and supports for the pipescomprising spaced transverse pipes having depending tubular legs, saidpipes, supports and legs being connected in series and adapted forconnection of supply and exhaust pipes.

6. A device of the class described comprising spaced pipes havingsupporting upright pipes connected therewith, and additional pipesdisposed upon and transversely of the spaced pipes, said last-namedpipes having their ends bent upwardly and the entire number of pipesbeing connected in series to form a water-passage.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in the presence of two witnesses.

DANIEL E. SMOAK.

Witnesses:

E. M. BLACKBURN, HERBERT T. SMOAK.

